Suspended independent sleeper for follow-up supporting trolley of a portable shield machine

Abstract

The invention discloses a novel portable independent suspended railway sleeper for a subsequent trolley matched with a shield tunneling machine. The railway sleeper is characterized by comprising an arc-shaped steel plate, wherein the arc-shaped steel plate is clung to the inner surface of a shield segment; an upper limiting lug plate and a lower limiting lug plate are arranged at the two ends of the arc-shaped steel plate respectively, are matched with a bent bolt hand hole for circumferential weld connection of segments, and are in demountable connection with a nut on a bent bolt head for the circumferential weld connection of the segments; vertical steel plates are arranged on the arc-shaped steel plate; a horizontal steel plate for supporting steel rails is arranged at the upper ends of the vertical steel plates. The railway sleeper has the advantages that the structure is simple; the consumption of steel is reduced; the weight of the railway sleeper is effectively reduced; the arc-shaped steel plate is clung to the shield segment and is fixed by the limiting lug plates at the two ends of the portable railway sleeper, and workers work in an annular tunnel, so that the carrying safety of the workers, the production safety of the workers, and the walking safety of the workers are improved; the occurrence rate of safety accidents is reduced; not only is the railway sleeper convenient to demount and transport, but also the shield trolley walks stably and reliably, and is high in safety.

Description

technical field [0001] The invention relates to the technical field of shield tunneling, in particular to an independent sleeper suspended in the air by a follow-up supporting trolley of a portable shield tunneling machine. Background technique [0002] The construction of the shield tunnel project is inseparable from the follow-up supporting trolley of the shield machine. The walking wheels of the follow-up supporting trolley of the track-type shield machine (referred to as "trolley" the same below) walk on the rails on the sleepers, and the rails There is a certain height from the bottom of the tunnel, and it is not a hindrance if there is water under the tunnel. Because the sleepers are relatively large, and the track sleepers of the flat-bed transportation battery car and the subsequent supporting trolley of the shield machine in the construction of the shield tunnel are a whole public Sleepers, and the common sleepers of trolleys and battery cars cannot be separated, le...

AI Technical Summary

Problems solved by technology

The disadvantage of the scheme is that the laying method of large sleepers is still the large-gauge continuous sleepers using railway sleepers, the weight of a single sleeper is still relatively large, and it takes a lot of manpower to disassemble and assemble when it is recycled, and it takes a long time

But there are the following problems: (1), the track sleeper of the battery car for tunnel construction and the track sleeper of the supporting trolley for the shield machine are not completely separated, and the two U-shaped sleeper components are connected by bolts. The concentrated load is the largest and the stress is the most concentrated. The horizontal section of the U-shaped component of the battery car is prone to displacement and structural deformation in the two directions of horizontal and vertical directions; (2) When the U-shaped component of the battery car is deformed, the U-shaped component of the trolley deformation together

Due to the existence of these two risk sources, there is a probability of derailment and a possibility of safety accidents

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